Cam-shaft housing.



w. L. coasow. CAM SHAFT HOUSING.

APPLICATION FILED DEC. H. 1916.

Patented Ju1y24, 1917,

A TTORNEYS share FTF,

WILLIAM L. CORSON, OF ALAMEDA, CALIFORNIA, A$SIGNOR TO UNION GAS ENGINE COMPANY, OF OAKLAND, CALIFORNIA, A- CORPORATION OF CALIFORNIA.

CAM-SHAFT nousrne;

AppIication filecl'December 11, 1916.

To all whom it may concern:

Be it known that I, VILLIAM L. CoRsoN, a subject of the King of Great Britain, residing at Alameda, in the county of Alameda and State of California, have invented certain new and useful Improvements in Cam- Shaft Housings, of which the following is a specification.

The present invention relates to a housing for the cam shafts of internal combus= shaft, one which is divided longitudinally providing a portion adapted for mounting the valve rocker arms and which is capable of removal from the other portion to permit of the inspection ofthe cam shaft without in any way interfering with the adjustment of or the journals for the rocker arms. To provide a housing which is capable of sepa ration to admit of the adjusting or inspection of the rocker arms or rocker arm journals for each set of valves Without interfering or disturbing the cam shaft, or the rocker arms associated with the valves of adjacent cylinders. To provide a housing which will enable the rocker arm and cam shaft hearings to be adequately lubricated and Without the annoyanceof the lubricant for the shaft or rocker arms escaping or working from the housing and running over the motor.

\Vith the above mentioned and other objects in view, the invention consists inthe novel construction and combination of parts, hereinafter described, illustrated in the ac companying drawings, and pointed out in the claims hereto appended; it being understood that various changes in the'form, proportion, size, andminor details of construction within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any ofthe advantages of the invention.

To more fully comprehend the invention, reference is directed to the accompanying drawings wherein:

Figure 1 is a view in side elevation of a Specification of Letters Patent.

Patented July 24, 1&1?

Serial No. 136,145.

portion of the preferred embodiment of my inventlon.

Fig. 2 is a vertical sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a view in end elevation of the disclosure inFig. 1.

Fig. 4 is a view in top plan of the disclosure in Fig. 1.

Referring more particularly to the several views of the drawings wherein like characters of reference designate corre sponding parts, A indicates a housing, preferably formed of cast metal and provided with a longitudinal cam shaft receiving bore 1. The housing is divided longitudinally preferably into the upper and lower halves 2 and 3, each being provided on itsopposite side edges with the flanges 4, which are adapted to be drawn together to provide an'oil tight joint between the halves on the tightening of suitable bolts'or other fastening means adapted to extend througl'r the alined receiving openings in the flanges. The lower half 3 of the housing is formed at intervals on the opposite sides of its base with the outwardly extending supporting feet or portions 6, adapted to rest on the topsof the engine cylinders, and to support the housing thereon.

The cam shaft, not disclosed, is supported in the bore 1 at intervals by suitable bearings' 6, which are seated in cotiperating semi circular recesses 6 in the meeting edges of the transversely extending walls 6 of the upper and lower halves 2 and 3 of the housing. This construction provides ample bearing spaces for the shaft and enables the cam shaft to be readily removed from the housing on the separation or removal of the upper half of said casing, which separation uncovers the camshaft bearings andenables the shaft with its hearings to be removed from the'housing;

Upper half 2 of the housing is formed at intervals within its length at points adapted to overlie the cylinders with the chambers 7, into which project the inner ends of the valve rocker arms not shown. A- clearance in the form'of a depression 8 is provided for the rocker arm actuating cams carried'on the cam shaft in the lower half 3 of the housing below the chambers 7. j

The rocker arm chambers 7,'are divided transversely as at 8 in a horizontal plane to provide a removable cap or cover9 therefor, and through the opening formed by said division the rocker arms, not shown are adapted to be positioned. The chambers are formed in their side walls with'the line-ally disposed journals 10, one half of each of which is formed in the cover 9,. and the upper half in the upper half 2 of thehousing. The covers 9 are retained in position to close the openings through which the rocker arms are inserted in any suitable manner, as by bolts or other securing means adapted to extend through openin s 9 in the cooperating flanges 9 and 9 A passage 11 is provided in thespaced sides of the chambers and the same connect the j our- 'nals1O with the interior of said chambers, and through the passages the rocker arms project into the housing. Passages 12 are providedin the cover 9 to permit of that portion of the rocker arms cooperating with the valves,to project exteriorly of the housing.

-An oil drain 13 extends longitudinally of the'lower half 3 of thehousing A and permits excess lubricant to drain from one end thereof. A suitable casing B is formed at one end of the housing A by the annular over-hanging wall 14., extending from the upper and lower halves 2, and 3, and the same is adapted to be closed by a suitable plate, not shown, and provide a housing for the usual cam shaft driving gear not illus trated. The lower portion of the wall 14: 1s formed with a recess 15 for receiving a suit able bearing 16, which supports a countereXcess lubricant from the drain 13, and to the bottom of the same is drain opening 18.

It is apparent in my improved construetion that thecam shaft is entirely inclosed, the inner portions and shaft of the rocker arms are likewise inclosed, and the outer valve cooperating members of the rocker arms project upwardly from the chamber cover. Thus the lubricant from the, cam shaft is prevented from escaping from the casing or housing. By removing the upper half of the housing, access may be had to the cam shaft and the same may be readily removed from the housing without interfering with the journals of the rocker arms. The removable coversfor thechambers and the arrangement of the rocker arm parts permit of the independent removal of any set of rocker arms without disturbing the other or in any way interfering with the cam shaft bearings. I I

Having thus described my invention what I claim is: 1 j

1. A housing for overhead cam shafts comprising a tubular cam shaft receiving shaft for transmitting power to the cam. shaft gear to rotate the same. To convey thef and inclosing member, said member being divided longitudinally into sections, one'of which is capable of removal to admit of the ready withdrawing of the cam shaft from said housing, and one of said sections being further provided with rocker arm mounting journals.

2. A' housing for overhead cam shafts comprising a tubular cam shaft receiving and inclosing member, said member being dividedlongitudinally into sections, one of which is capable of removal to admit of the ready withdrawing of the cam shaft from said housing, and said removable section being provided with rocker arm mounting journals.

3. A cam shaft housing and rocker arm mountin com arisin a closed tubular cam longitudinally in a horizontal plane to pro- I ide an upper portion to admit of the with lrawingof the cam shaft from said housng, said detachable portion provided with n enlarged chamber for the mounting of he rocker arms, said enlarged chamber pro- .fvided on opposite sides with rocker arm mounting journals,said detachable portions eing divided in a horizontal plane through aid journals to provide a removable cover or said chambers, and further provided with openings connecting said journals with he interior of said enlarged chamber, and also provided with other openings through "the cover, and connecting the journalswith the exterior of the housing.

5. A cam shaft housing and rocker arm mounting, comprising a closed tubular cam shaft receiving and inclosingmember, divided longitudinally in a horizontal plane to provide a detachable upper portion to admit of the ready withdrawing of the cam shaft from the housing, said sections provided on the interior with transversely extending dividing walls, the inner cooperating surfaces of which are adapted to provide a mounting for a cam shaft bearing. g

6. A camshaft housing and rocker arm ,mountingcomprising a closed tubular cam shaft receiving and ,inclosing member, divided longitudinally in a 'horizontal plane toprovide a detachableupper portion which is capable of removal to admit of the ready withdrawing of the cam shaft from the bolls ing, said detachable upper portion provided with rocker arm mounting journals capable of separation to admit of the removing of the rocker arms therefrom Without removing the upper portion of said inolosed member.

7. A cam shaft housing and rocker arm mounting comprising a closed tubular cam shaft receiving and inclosing member divided longitudinally in a horizontal plane to provide a detachable upper portion which is capable of removal to admit of the ready withdrawing of the cam shaft from the housing, said detachable upper portion provided with rocker arm mounting journals, and means for permitting the removal of the rocker arms from the journals Without the removal of the upper portion of said member.

8. A cam shaft housing and rocker arm mounting comprising a tubular cam shaft receiving and inclosing member, divided longitudinally in a horizontal plane to provide a detachable upper portion which is capable of removal to admit of the ready withdrawing of the cam shaft from the housing, said detachable upper portion provided With an opening for the reception of a rocker arm, and a removable cover for closing said opening, said cover When removed, permitting the free removal of the rocker arms from their journals.

9. A cam shaft housing and rocker arm mounting comprising a closed tubular cam shaft receiving and inclosing member, divided longitudinally in a horizontal plane to provide a detachable upper portion which is capable of removal to admit of the ready Withdrawing of the cam shaft from the housing, said detachable upper portion provided with an opening for the reception of a rocker arm a removable cover for closing said opening, said removable cover and detachable upper portion of the housing provided in their meeting edges With a rocker arm supporting journal opening into the in terior of the housing, and to the exterior thereof through said cover.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

WILLIAM L. OORSON.

Witnesses O. H. FISCHER, LEON EMERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

